Mena Suvari was the picture of girl-next-door glamour in her star-making turn in the 1999 film “American Beauty.” But her real life couldn’t have been further from the appearance she projected in that and her other hit that year, “American Pie.” Now 42, the actress is out with a memoir, “The Great Peace.” It’s an often harrowing read that details abuse that started when she was 12, when she was raped by her older brother’s friend. Suvari hopes that her book will find readers who feel as alone as she once felt, and that her emotional vulnerability and honesty will act as a light showing the way out of shame. “I don’t want to feel bad for myself anymore,” she said. “I don’t want to give that power away.”